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https://github.com/encounter/dawn-cmake.git
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112 lines
4.6 KiB
C++
112 lines
4.6 KiB
C++
// Copyright 2017 The NXT Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#ifndef BACKEND_COMMANDBUFFERSTATETRACKER_H
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#define BACKEND_COMMANDBUFFERSTATETRACKER_H
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#include "backend/CommandBuffer.h"
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#include "common/Constants.h"
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#include <array>
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#include <bitset>
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#include <map>
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#include <set>
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namespace backend {
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class CommandBufferStateTracker {
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public:
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explicit CommandBufferStateTracker(CommandBufferBuilder* builder);
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// Non-state-modifying validation functions
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bool HaveRenderPass() const;
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bool ValidateCanCopy() const;
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bool ValidateCanUseBufferAs(BufferBase* buffer, nxt::BufferUsageBit usage) const;
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bool ValidateCanUseTextureAs(TextureBase* texture, nxt::TextureUsageBit usage) const;
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bool ValidateCanDispatch();
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bool ValidateCanDrawArrays();
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bool ValidateCanDrawElements();
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bool ValidateEndCommandBuffer() const;
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// State-modifying methods
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bool BeginComputePass();
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bool EndComputePass();
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bool BeginSubpass();
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bool EndSubpass();
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bool BeginRenderPass(RenderPassBase* renderPass, FramebufferBase* framebuffer);
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bool EndRenderPass();
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bool SetPipeline(PipelineBase* pipeline);
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bool SetBindGroup(uint32_t index, BindGroupBase* bindgroup);
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bool SetIndexBuffer(BufferBase* buffer);
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bool SetVertexBuffer(uint32_t index, BufferBase* buffer);
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bool TransitionBufferUsage(BufferBase* buffer, nxt::BufferUsageBit usage);
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bool TransitionTextureUsage(TextureBase* texture, nxt::TextureUsageBit usage);
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bool EnsureTextureUsage(TextureBase* texture, nxt::TextureUsageBit usage);
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// These collections are copied to the CommandBuffer at build time.
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// These pointers will remain valid since they are referenced by
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// the bind groups which are referenced by this command buffer.
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std::set<BufferBase*> buffersTransitioned;
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std::set<TextureBase*> texturesTransitioned;
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std::set<TextureBase*> texturesAttached;
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private:
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enum ValidationAspect {
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VALIDATION_ASPECT_RENDER_PIPELINE,
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VALIDATION_ASPECT_COMPUTE_PIPELINE,
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VALIDATION_ASPECT_BIND_GROUPS,
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VALIDATION_ASPECT_VERTEX_BUFFERS,
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VALIDATION_ASPECT_INDEX_BUFFER,
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VALIDATION_ASPECT_RENDER_SUBPASS,
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VALIDATION_ASPECT_COMPUTE_PASS,
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VALIDATION_ASPECT_COUNT
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};
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using ValidationAspects = std::bitset<VALIDATION_ASPECT_COUNT>;
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// Usage helper functions
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bool BufferHasGuaranteedUsageBit(BufferBase* buffer, nxt::BufferUsageBit usage) const;
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bool TextureHasGuaranteedUsageBit(TextureBase* texture, nxt::TextureUsageBit usage) const;
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bool IsInternalTextureTransitionPossible(TextureBase* texture, nxt::TextureUsageBit usage) const;
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bool IsExplicitTextureTransitionPossible(TextureBase* texture, nxt::TextureUsageBit usage) const;
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// Queries for lazily evaluated aspects
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bool RecomputeHaveAspectBindGroups();
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bool RecomputeHaveAspectVertexBuffers();
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bool HavePipeline() const;
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bool ValidateBindGroupUsages(BindGroupBase* group) const;
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bool RevalidateCanDraw();
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void UnsetPipeline();
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CommandBufferBuilder* builder;
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ValidationAspects aspects;
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std::bitset<kMaxBindGroups> bindgroupsSet;
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std::array<BindGroupBase*, kMaxBindGroups> bindgroups = {};
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std::bitset<kMaxVertexInputs> inputsSet;
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PipelineBase* lastPipeline = nullptr;
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std::map<BufferBase*, nxt::BufferUsageBit> mostRecentBufferUsages;
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std::map<TextureBase*, nxt::TextureUsageBit> mostRecentTextureUsages;
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RenderPassBase* currentRenderPass = nullptr;
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FramebufferBase* currentFramebuffer = nullptr;
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uint32_t currentSubpass = 0;
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};
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}
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#endif // BACKEND_COMMANDBUFFERSTATETRACKER_H
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